A Singularity Formation and Breakdown Ricci Tensor

[Alien101]

TL;DR Summary

Ricci flow equation

The Ricci tensor fails systematically in the Ricci flow equation: "due to the highly non-linear nature of the Ricci flow equation, singularities form in finite time. These singularities are curvature singularities, which means that as one approaches the singular time the norm of the curvature tensor blows up to infinity".

Case Study: Type I and Type II Singularities:

Citing a research that identified two types of singular breakdowns: "Type I and Type II singular points" where "the Riemannian curvature tensor has to blow up at least at a Type I rate" and "the Ricci curvature must blow up near every singular point of a Ricci flow".

Is this "blow-up" a physical necessity or a limitation of our tensor calculus approach?

 

[martinbn]

Why did you post this in the relativity subforum?

 

[renormalize]

TL;DR Summary: Ricci flow equation

Your post includes several direct quotes. What is the source of these quotations?

 

[PeterDonis]

Citing a research

What research? Please give a reference. Otherwise we don't have a valid basis for discussion.